import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import qs from 'qs'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      config.headers['AccessToken'] = store.getters.token
    }

    if (config.method === 'get') {
      config.params = {
        user_id: store.getters.userId ? store.getters.userId : '',
        ...config.params
      }
    } else {
      if (config.headers['Content-Type'] !== 'multipart/form-data') {
        config.data = {
          ...config.data,
          user_id: store.getters.userId ? store.getters.userId : ''
        }
      }
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(

  response => {
    const res = response.data

    if (response.config.config.ignoreCode) {
      return res
    }

    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 0) {
      Message({
        message: res.msg || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.msg || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export function uploadFile(url, params) {
  var form = new FormData()
  for (var key in params) {
    form.append(key, params[key])
  }
  return post(url, form, {
    headers: {
      'Content-Type': 'multipart/form-data'
    }
  })
}

export function get(url, params) {
  return service({
    url: url,
    method: 'get',
    params: qs.stringify(params, { indices: false })
  })
}

export function put(url, data) {
  return service({
    url: url,
    method: 'put',
    data: qs.stringify(data, { indices: false })
  })
}

export function patch(url, data) {
  return service({
    url: url,
    method: 'patch',
    data: qs.stringify(data, { indices: false })
  })
}

export function post(url, data, config = {}) {
  return service({
    url: url,
    method: 'post',
    data: data,
    timeout: config.timeout,
    config: config
  })
}

export default service
